[INFO] cloning repository https://github.com/roynalnaruto/rs_merkle_tree [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/roynalnaruto/rs_merkle_tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Froynalnaruto%2Frs_merkle_tree", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Froynalnaruto%2Frs_merkle_tree'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 62324ec83f33a6413fa0dead25dcb1d18e6ff2da [INFO] checking roynalnaruto/rs_merkle_tree against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Froynalnaruto%2Frs_merkle_tree" "/workspace/builds/worker-5/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/roynalnaruto/rs_merkle_tree on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/roynalnaruto/rs_merkle_tree [INFO] finished tweaking git repo https://github.com/roynalnaruto/rs_merkle_tree [INFO] tweaked toml for git repo https://github.com/roynalnaruto/rs_merkle_tree written to /workspace/builds/worker-5/source/Cargo.toml [INFO] crate git repo https://github.com/roynalnaruto/rs_merkle_tree already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 559daa4f73554c78dbfc3629eb360db17a60a9cda3bc55b89b35ea268372fd32 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "559daa4f73554c78dbfc3629eb360db17a60a9cda3bc55b89b35ea268372fd32", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "559daa4f73554c78dbfc3629eb360db17a60a9cda3bc55b89b35ea268372fd32", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "559daa4f73554c78dbfc3629eb360db17a60a9cda3bc55b89b35ea268372fd32", kill_on_drop: false }` [INFO] [stdout] 559daa4f73554c78dbfc3629eb360db17a60a9cda3bc55b89b35ea268372fd32 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] cc84f97911d3d8a18fd617184c6204e7b3265168d7936661c6089eee8d8948da [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "cc84f97911d3d8a18fd617184c6204e7b3265168d7936661c6089eee8d8948da", kill_on_drop: false }` [INFO] [stderr] Compiling rust-crypto v0.2.36 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking rand v0.3.23 [INFO] [stderr] Checking merkle_tree v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: struct is never constructed: `MerkleTree` [INFO] [stdout] --> src/merkle_tree.rs:29:12 [INFO] [stdout] | [INFO] [stdout] 29 | pub struct MerkleTree [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `root` [INFO] [stdout] --> src/merkle_tree.rs:42:8 [INFO] [stdout] | [INFO] [stdout] 42 | fn root(&self) -> Result<&Node, &'static str> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `count_leaves` [INFO] [stdout] --> src/merkle_tree.rs:49:8 [INFO] [stdout] | [INFO] [stdout] 49 | fn count_leaves(&self) -> Result { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `add_leaves` [INFO] [stdout] --> src/merkle_tree.rs:59:8 [INFO] [stdout] | [INFO] [stdout] 59 | fn add_leaves(&mut self, values: &mut Vec) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `from_leaves` [INFO] [stdout] --> src/merkle_tree.rs:89:8 [INFO] [stdout] | [INFO] [stdout] 89 | fn from_leaves(values: &mut Vec, mut hasher: H) -> Result { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `build_parent_nodes` [INFO] [stdout] --> src/merkle_tree.rs:121:8 [INFO] [stdout] | [INFO] [stdout] 121 | fn build_parent_nodes(children: &Vec>, mut hasher: &mut H) -> Vec> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `as_leaf` [INFO] [stdout] --> src/merkle_tree.rs:140:8 [INFO] [stdout] | [INFO] [stdout] 140 | fn as_leaf(v: &T, hasher: &mut H) -> Node { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `as_internal` [INFO] [stdout] --> src/merkle_tree.rs:153:8 [INFO] [stdout] | [INFO] [stdout] 153 | fn as_internal(left: &Node, right: &Node, hasher: &mut H) -> Node { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 6.78s [INFO] running `Command { std: "docker" "inspect" "cc84f97911d3d8a18fd617184c6204e7b3265168d7936661c6089eee8d8948da", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cc84f97911d3d8a18fd617184c6204e7b3265168d7936661c6089eee8d8948da", kill_on_drop: false }` [INFO] [stdout] cc84f97911d3d8a18fd617184c6204e7b3265168d7936661c6089eee8d8948da